F.4 Chem Chapter 10, and 11.1-11.2

Which of the following combinations concerning the uses of metals is correct?

• Titanium

  To make power cables

• Copper

  To make water pipes

• Iron

  To make aircraft bodies

• Zinc

  To make food cans

What of the following properties concerning copper for its use as cooking utensils are correct?

(1) Good conductor of heat

(2) Non-poisonous

(3) Corrosion resistant

• (1) and (2) only

• (1) and (3) only

• (1) and (3) only

• (1), (2) and (3)

Zinc is NOT used to make food cans because

• it is expensive.

• it is not a good conductor of heat.

• its ion is poisonous.

• it is soft.

Which of the following metals can be found in free state in nature?

• Sodium

• Iron

• Gold

• Lead

Which of the following metals can be obtained by heating its oxide alone?

• Copper

• Silver

• Magnesium

• Iron

Which of the following methods is suitable for the extraction of aluminium from its ore?

• Heating the metal ore alone

• Heating the metal ore with carbon

• Heating the metal with iron

• Electrolysis

What would be observed when potassium is added to cold water? (1) A lilac flame is observed. (2) It sinks to the bottom. (3) A white suspension forms.

• (1) only

• (2) only

• (1) and (3) only

• (2) and (3) only

All metals below react with cold water to give hydrogen except

• Ba.

• Ca.

• Li.

• Mg.

Which of the following statements about iron is INCORRECT?

• It is a transition metal.

• It can be extracted by heating haematite with coke in a blast furnace.

• It reacts with cold water to give iron(II) hydroxide and hydrogen.

• It reacts with hydrochloric acid to give iron(II) chloride and hydrogen.

Which of the following reactions produce hydrogen? (1) Reaction between magnesium and dilute hydrochloric acid (2) Reaction between zinc and cold water (3) Reaction between iron and steam

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)